View Compilation Error

0_0_18295741_17953.cpp: In function 'long long int C(int, int)':
0_0_18295741_17953.cpp:21:5: error: expected ';' before 'long'
     long long s=0;
     ^
0_0_18295741_17953.cpp:24:9: error: 's' was not declared in this scope
         s^=tre[x&1][y&1][x][y];
         ^
0_0_18295741_17953.cpp:25:12: error: 's' was not declared in this scope
     return s;
            ^